chanelink logo
CHANELINK
English

Scientists build high-power cladding-pumped Raman fiber laser in 1.2 μm band

65
2024-01-31 13:58:14
See translation

Laser sources operating in the 1.2 μm band have some unique applications in photodynamic therapy, biomedical diagnostics, and oxygen sensing. In addition, they can be used as pump sources for mid-infrared optical parameter generation and visible light generation through frequency doubling.

Laser generation in the 1.2 μm band has been achieved by different solid-state lasers, including semiconductor lasers, diamond Raman lasers, and fiber lasers. Among these three types, fiber lasers are an excellent choice for generating 1.2 μm band lasers due to their simple structure, good beam quality, and flexible operation.

Researchers led by Professor Pu Zhou from the National University of Defense Technology in China are interested in high-power fiber lasers in the 1.2μm band. Most of the current high-power fiber lasers are ytterbium-doped fiber lasers in the 1 μm band, and the maximum output of the 1.2 μm band is limited to 10 watts.

Their research, titled "High-Power Tunable Raman Fiber Laser in the 1.2 μm Band," was published in Frontiers in Optoelectronics.

Their idea is to use the stimulated Raman scattering effect in passive optical fibers to obtain high-power laser generation in the 1.2μm band. The stimulated Raman scattering effect is a third-order nonlinear effect that converts photons to longer wavelengths.

By exploiting the stimulated Raman scattering effect in phosphorus-doped optical fiber, the researchers converted the high-power ytterbium-doped fiber in the 1 μm band to the 1.2 μm band. A Raman signal with a power of 735.8 W was obtained at 1252.7 nm, which is the highest output power ever reported for a 1.2 μm band fiber laser.

Source: Laser Network


Related Recommendations

  • Researchers enhance the signal of perovskite nanosheets

    In the field of optoelectronics, researchers from Busan National University in South Korea and the University of Oxford in the UK have successfully improved the signal amplification ability of CsPbBr3 perovskite nanosheets through innovative patterned waveguide methods, bringing new possibilities for the future of optoelectronics. This breakthrough not only has potential applications in fields suc...

    2024-02-22
    See translation

  • The INRS camera captures transient events and is suitable for various scenarios such as high-speed LiDAR systems for autonomous driving

    It is reported that the National Institutes of Sciences (INRS) of Canada has developed a camera platform that can achieve cheaper ultra fast imaging through the use of ready-made components, which can be used in various applications.This new device aims to address some of the limitations of current high-speed imaging, including parallax errors and potential damage from pulse illumination. Th...

    2023-10-07
    See translation

  • Three core processes of laser soldering support the development of PCB electronics industry

    In the field of modern electronic manufacturing, PCB (printed circuit board) serves as the carrier of electronic components. In its manufacturing process, laser soldering technology has become a key link in PCB electronic manufacturing due to its advantages of high precision, high efficiency, and low thermal impact. This article will explore the application of laser soldering technology and its ma...

    2024-04-15
    See translation

  • Research progress on aerospace materials and anti ablation coatings: a review

    India B R. Dr. Jalandal Ambedkar National Institute of Technology and the Indian Institute of Technology reviewed and reported on the research progress of aerospace materials and anti ablation coatings. The related paper was published in Optics&Laser Technology under the title "Progress in aerospace materials and ablation resistant coatings: A focused review".a key:1. A comprehensive overview ...

    2024-11-21
    See translation

  • The "white" laser device from startup Superlight Photonics will completely transform imaging

    Superlight Photonics, a start-up company headquartered in Enshurd, has developed a broadband laser chip that can replace the bulky and power consuming technology currently used in advanced imaging and metering equipment.This idea suddenly appeared in his mind, while moving his other belongings from Germany to his new home in Enschede. During his doctoral research at the Max Planck Institute of Mul...

    2023-10-28
    See translation